Heater.



No. 799,252. PATENTED SEPT. 12, 1905.

0. E. McPHERSON.

HEATER.

APPLICATION FILED AUG. 19, 1904.

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5% UUUUUDUUU U UUUUDUDUU QDDDDUUUQ mama CHARLES E. MOPHERSON, OFALLEGHENY, PENNSYLVANIA.

HEATER.

Specification of Letters Patent.

Patented Sept. 12, 1905.

Application filed August 19, 1904. Serial No- 221,380.

ployed as a fuel; and the invention has for its 1 object the provisionof a heater adapted to receive its fuel from a gas-jet extending intothe same and which may be advai'itageously used for the heating of hallsor rooms by the disposal of the heater below the floor of a room orhallway to be heated.

Another object of this invention is to provide novel means forcontrolling the combustion of the fuel and :for manipulating the heater.the construction employed to accomplish these results being of a simplenature and comparatively inexpensive to manufacture.

Briefly described, the invention comprises an inner and outer shell orcasing, the inner shell or casing suitably supported in the outer oneand having a closed upper end which carries a heating-coil, preferablyin the form of a spiral cone. The outer casing is suspended from the boxthat is supported from the floor and is covered with the radiator-coverof the usual type or form of construction. The lower end of the outercasing is provided with a cap having openings formed therein, and uponthis cap are mounted rotary shutters, where by the combustion of thefuel within the heater may be controlled. A gas-jet extends through theouter casing and feeds into the lower end of the inner casing, and meansmay be provided whereby the controlling valve or cook of the gas-supplyline may be operated from above the heater. Means is also provided forprotecting the floor from the heat generated by the heater.

' All of the above construction will be hereinafter more specificallydescribed and then particularly pointed out in the claims, and indescribing the invention in detail reference will be had to theaccompanying drawings, forming a part of this application, wherein likenumerals of reference designate corretion. Fig. 2 is a central verticalsectional view. Fig. 3 is a top plan view of the heater with theradiator covering or grating removed. Fig. A is a bottom plan view of myimproved heater. Fig. 5 is a top plan view of the floor-plate and aradiator covering or grating. Fig. (5 is a detached detail sideelevation of the heating-coil, and Fig. 7 is a perspective viewillustrating how the controlling valve or cook in the gas-supply linemay be operated from above the heater.

To put my invention into practice, I provide an outer casing or shell 1,generally made cylindrical, though not necessarily so, and an innershell 2, conforming in contour to the outer shell I. The shell lat itsupper end extends into a substantially rectangular box or frame 3, theside walls of which are turned over at their upper edges to form flangesa, which rest upon shoulders provided therefor in the rectangularfloor-plate 5, which floorplate is also recessed or shouldered toreceive the radiator covering or grating 6, which may be of the ordinaryform having a shut-off or dampers so arranged as to be turned to permitthe heat to escape into the room or shut off the heat from the room inthe well-known manner. I preferably surround the box 3 with an asbestoscovering 7, whereby to protect the adjacent wood from the heat. Theinner shell or casing 2. is preferably of a less length than the outershell or casing 1 and is suitably supported therein by the curvedbrackets 8, this inner shell or casing being provided with one or moreopenings 9 near the upper end to permit the escape of the products ofcombustion. On the upper end of the inner shell or casing 2 is fitted acap or covering 10. This cap or covering has secured thereto aheating-coil 11, which in practice I have generally made of a copper rodwound in a spiral-cone form, the apex of the cone being downward andlying at a point directly above the mixer and burner 12, carried on thegas-supply line H, which supply-line extends through an opening 15,provided therefor in the outer shell or casing 1. The heatwhich isadapted to engage the lower convolution of heat-resisting materiaL-and Ipreferably protect the periphery of the outer casing 1 and the loweredges of the box or frame 3 with a similar material. As the heater isgenerally lowered beneath the room or hallway which it is desired toheat, it is preferable to provide means whereby the same may be operatedfrom above the heater, and to this end I attach to the stem of the valve17 of the supplypipe 14: a rod 18, adapted to project into the floor 19,whereby to be engaged and operated by a key 20 of a suitable form.l/Vhen so operated, the controlling-valve 17 will be so arranged thatwhen turned to close the same the valve will not be entirely seated,permitting suflicient gas to burn as a pilot-light in the mixer andburner 12. The lower end of the outer casing 1 is provided with a cap orcover 21, which is provided with a plurality of radiatingtriangular-shaped openings 22, and rotatably mounted on the cap or cover21 are the shutters 23, which are operated by a winged screw 2a. By theprovision of this capor cover 21 the amount of fresh air admitted to thecasing may be governed by the position of the shutters in respect to theopenings 22 22. The provision of a heating-coil 11 enables me to obtaina considerably greater amount of heat than would be possible with theshells or casings alone, this copper coil throwing off its heat, whichpasses upwardly through the radiator cover or grating.

The provision of the asbestos cover around the box 3 and around thecasing prevents any danger of the wood adjacent to the heater be comingoverheated. The bottom of the box 3 is generally provided with one ormore openings 25. The gas-supply 14 is provided with a combined mixerand burner-top 12 upon its end, the mixer being so constructed as toeffect a perfect mixing of the air and gas prior to its reaching thepoint of ignition to assist in effecting a perfect combustion, which isfurther assisted by the heat-producing coil 11.

In Fig. 1 I have shown, as at 26, how the connection may be made withthe box 3 of a flue (not shown) should it be desired in any particularcase.

While I have shown and described a practical embodiment of my inventionas it is practiced by me, it will be noted that various changes may bemade in the details of construction without departing with the spiritthereof.

Having described my invention, what I claim, and desire to secure byLetters Patent,

bination with a floor-plate countersunk in a floor, and asupporting-frame countersunk in the floor-plate and depending below thefloor, of an outer shell or casing suspended from said frame, means onthe lower end of said shell or casing for regulating the quantity of airfed to the shell or casing, an inner shell or casing suitably supportedWithin the outer shell or casing and of less length than the latter,said inner shell or casing havinga closed upper end and open lower end,a heat-resisting material on the inner face of the inner shell or casingadjacent the lower end thereof, and a fuel-supply extending through theouter casing and terminating at the lower end of the inner shell orcasing centrally thereof.

2. In a heater of the ty pe described, the combination of a suspendedsupporting-frame, two heating shells or casings arranged one within theother and supported by said frame, a conical heat-retaining coilarranged within the 1. In a heater 0f the type described, the cominnershell or casing, a fuel-supply leading to said frame, a cover or lidsecured to the lower end of said outer shell, said lid having openingsformed therein, means'for closing said openings, an inner shellsupported by said outer shell, a lid for said inner shell, aheating-coil carried by said lid, and a fuel-supply communicating withthe lower end of the inner shell, substantially as described.

4. A heater of the type described, comprising a frame suitablysupported, an outer shell fitted in said frame, a cover secured to thelower end of said outer shell, said cover having openings formedtherein, shutters rotatably mounted adjacent to said openings, an innershell supported by the outer shell, a lid for said inner shell, aheating-coil carried by said lid, a fuel-supply communicating with thelower end of said inner shell, substantially as described and for thepurpose set forth.

In testimony whereof I affix my signature in the presence of twowitnesses.

CHARLES E. MOPHERSON.

IIS

